Sony HCD-RG444 Service Manual page 21

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3. Mode: Playback
test tape
P-4-A100
(10 kHz, – 10 dB)
L-CH
set
R-CH
waveform of oscilloscope
in phase 45 °
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
Adjustment Location: Playback Head (Deck A)
TE
L 13942296513
forward
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AMP board
SPEAKER terminal (JK441)
L-CH
oscilloscope
V H
R-CH
90 ° 135 ° 180 °
good wrong
Record/Playback/Erase Head (Deck B)
reverse
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8
Tape Speed Check
DECKA DECKB
Mode: Playback
test tape
WS-48B
(3 kHz, 0 dB)
1. Insert the WS-48B into the deck.
2. Press the H button on the deck.
3. Confirm that the frequency counter reads 3,000 ± 90 Hz.
Sample value of Wow and Flutter: 0.3% or less W.RMS (JIS)
Q Q
3 6 7 1 3 1 5
co
.
HCD-RG444
9 4 2 8
frequency counter
+
set
–
AMP board
SPEAKER terminal (JK441)
L-CH, R-CH
(WS-48B)
0 5 8 2 9 9 4 2 8
m
9 9
9 9
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